Method for manufacture of metal baskets



e 1951 J. VAN DER TOGT 2,566,644;

METHOD FOR MANUFACTURE OF METAL BASKETS Filed April 10, 1947 V INVENTOR.0, p" 7;

Fatented Sept. 4, 1951 METHOD FOR MANUFACTURE OF METAL BASKETS Jan vander Togt, Zwijndrecht, Netherlands, as-

signor to Vennootschap onder de firma Tornado, Zwijndrecht, Netherlands,a partnership of the Netherlands Application April 10, 1947, Serial No.740,618

In the Netherlands October 24, 1942 Section 1, Public Law 690, August 8,1946 Patent expires October 24, 1962 The metal baskets known inagriculture are Provided with a central bottom disc, to which the endsof radial pieces of wire extending upwardly as wall-wires are welded onebyone, or a plurality thereof simultaneously. At any rate a plurality ofwelding-operations is always necessary for welding all of the ends ofthe radial pieces of wire to the bottom disc. This method is thereforetime-consuming.

The known metal baskets further have an upper edge to which the upperends of the wallwires are welded. This welding-operation is effectedwhen the upper edge still possesses a fiat shape or has been angularlybent only. After the welding-operation the upper edge by a separateoperation has to be folded inwardly against the inner side of thewire-ends. This method of attachment is also time-consuming.

The invention has for its object to considerably accelerate the methodof manufacture.

For the manufacture of metal baskets, provided with a central bottom towhich the end of radial wire-pieces forming bottom-wires extendingupwardly as wall-wires, according to the invention a method is carriedout according'to which the end of the wires in question are, preferablyelectrically, welded in one single weldingoperation between an upperbottom-disc and a lower bottom-disc.

For the manufacture of metal baskets having an upper edge in the form ofa reversed gutter into which the upper ends of the wall-wires areinserted, according to the invention a method is carried out accordingto which it is started from an edge having a J-shaped cross-section, theupper ends of the wall-wires being inserted into the circular groove ofthis edge, while the welding-operation is effected from the exterior tothe long leg of the edge. The separate bordering or folding-operation ofthe known method has now become superfluous.

The welding of the ends of the radial bottomwire-pieces between the twobottom-discs referred to above may be effected as follows: The basket isplaced upside-down so that the upper central bottom-disc is locatedunderneath. This disc is supported by a gauge and while the wall-wiresare kept in place in gauge the ends of the radial bottom wire pieces areput in place on the said upper disc; the lower central disc (which isnow located above) is then placed upon these ends and the two discs areprovisionally fixed to one another by means of a screw-connectionthrough a central hole made in each one of the discs; then the weldingunder pressure is effected in 2 Claims. (01. 140-71) 2 one or moreoperations depending on the weight of the welding machine. The lowerdisc and/or the upper disc maybe provided beforehand with radialgroovesin its circumferential edge, the number of these. groovescorrespondingtov that of. the. wire ends which will have to be weldedbetween the two discs.

The upper edge having a J-shaped cross-section may be put in place bysliding it downwardly around the wall of the basket, when the latter isplaced upside down, till the free ends of the wall-wires are brought inengagement with the groove of the upper edge.

During the welding of the ends of the radial wire-pieces and during thewelding of the ends of the wall-wires to the upper edge the wallwiresare placed in a gauge, so that they are maintained in their correctrelative positions.

The invention relates also to a metal basket made in accordance with themethod above described.

On the annexed drawing an embodiment according to the invention isillustrated by way of example:

Fig. 1 is an elevation of the whole basket.

Fig. 2 is, on a larger scale and partially in section on the line 11-11in Fig. 1, an elevation of the upper edge of the basket.

Fig. 3 is, also on a larger scale, an elevation, partially a section, ofthe central bottom-piece.

On the drawing I indicates the wall-wires and 2 the radial bottom-wirepieces, forming part of the wall-wires l; the connection between thewall-wires l is obtained by means of circumferential wires 3 located inhorizontal planes.

The ends of the radial wire pieces 2 are welded between an upper centraldisc 4 and a lower central disc 5 of equal dimensions. A central hole 6in each of those discs serves for the temporary connection of the twodiscs by means of a screw bolt and a nut. The lower disc 5 is providedwith radial grooves I in its peripheral edge; there are as many groovesI as there are wire ends between the discs. The upper disc 6 may also beprovided with grooves. The lower disc 5 is slightly depressed centrallyso that a radial boundary for the wire ends is produced in the form ofan upstanding edge 8.

The upper ends of the wall-wires l are located in the groove or an upperedge having a crosssection in the form of a reversed J; they are weldedto the long leg ill of the upper edge below the short leg 9 located atthe inner side.

I claim:

1. A method for manufacture of metal wire baskets having a two piececentral bottom composed of an upper and lower part to which the ends ofthe radial pieces of wire forming the bottom wires and extendingupwardly as wall wires are welded comprising supporting the wall wireportions in a gauge in an inverted position, placing the ends of theradial wire pieces on theupper portion of said bottom piece andarranging them in spaced radial grooves located therein, placin thelower portion f'said bottom piece over the said ends and superimposed onthe upper portion, temporarily securing the two portions of said bottompiece, and welding said ends to said portions by pressureweldingin asingle operation. r

2. In a method as claimed claim 1 and: wherein an upper edge for saidbasketfhavmg; a J-shaped cross-section is passed down over the bottomwith the short leg thereof inwardlywhile said basket is in invertedposition and slid downwardly around the wall. of? the basket. until thefree ends of said wall wires are en a ed in; the groove formed byisaidupperedge behind said short leg, and. said "wire endsare subsequentlywelded to the longleg' of said edge.

JAN VAN: mamv TOGT.

REFERENCES CITED The following references are of, record in the file ofthis: patent: I

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